A user interface may include instructions to complete a task (including a plurality of task items) and rule(s) that indicate to a worker how a payment associated with the task is to be calculated. The worker may provide information associated with the individual task items via the user interface. The payment may be calculated based on the rule(s), where the payment is determined based at least in part on a multiplicative payment component. In some implementations, the user interface may include an option for the worker to skip question(s), and the worker may be incentivized to skip question(s) when the worker does not know the answer. Further, in some implementations, the user interface may allow the worker to specify a confidence value when the worker chooses to answer the question, and the worker may be incentivized to provide an accurate confidence value.
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